Avascular necrosis (AVN) is a condition caused by a lack of blood supply to the bones, resulting in the death of bone tissue. It can affect any bone in the body, though it is most common in the hip, shoulder, knee, and ankle. The rate of progression of AVN depends on the severity of the condition.
Symptoms of Avascular Necrosis
The most common symptom of AVN is pain in the affected area. This pain may be mild to severe and may be aggravated by physical activity. Other symptoms can include swelling, stiffness, and decreased range of motion. In some cases, an X-ray of the affected area may reveal signs of AVN.
Causes of Avascular Necrosis
AVN can have several causes, including trauma, alcohol abuse, certain medications, and diseases such as sickle cell anemia and lupus. It can also be a result of long-term steroid use.
Diagnosis of Avascular Necrosis
To diagnose AVN, a doctor will typically order an X-ray, MRI, or CT scan of the affected area. These tests can help to pinpoint the location and extent of the necrotic bone tissue.
Treatment of Avascular Necrosis
Treatment for AVN can vary depending on the severity of the condition. In mild cases, rest and physical therapy may help to reduce pain and swelling. In more severe cases, surgery may be necessary to repair the affected area.
Progression of Avascular Necrosis
The rate of progression of AVN depends on its severity. In mild cases, the condition may remain stable over time. But in more severe cases, the necrotic bone tissue can continue to spread, resulting in further bone damage and disability.